Validity and Reliability Analysis of My Jump 2 Mobile Application

Abstract

In recent years, in parallel with the developments in technology, mobile applications have been developed to improve, measure, and analyze sports performance. This research was conducted with the aim of performing the validity and reliability analysis of the My Jump 2 mobile application, which is one of the applications in question, with sedentary individuals using the countermovement leap (CMJ) technique. The research group consisted of a total of 24 sedentary individuals (age; 22.25±1.11 years, height; 170.37±8.82 cm, body weight; 63.95±10.69 kg), 13 male and 11 female, to participate in the study. Jumps were recorded simultaneously with the My Jump 2 mobile app and Fusion Sport brand Smart Jump splash mat device. The normality of the data was interpreted using the Shapiro-Wilk normality test and skewness-kurtosis coefficients. The effect value size was calculated by considering Cohen's d index. Comparison between two different measurement methods was calculated by Paired Sample t test. Pearson correlation and Bland-Altman Graph analysis method were used for validity analysis. In the reliability analyses, the Repeated Measures ANOVA test, coefficient of variation (CV), typical error (TE) and intraclass correlation coefficient (ICC) values were used. As a result of the Bland-Altman analysis, a low bias (-0.26) and a data set that was largely distributed within the calculated limited area were obtained. A high level of correlation coefficient (r=0.99) and coherence value was obtained between My Jump 2 and the jump mat (ICC=0.992-0.994). The results of the research show that My Jump 2 mobile application can be used as a valid and reliable method in determining the vertical jump height of sedentary individuals.

Keywords

• Vertical jump
• strength
• Mobile app
• My Jump

My Jump 2 Mobil Uygulamasının Geçerlilik ve Güvenilirlik Analizi

Öz

Son yıllarda teknolojideki gelişmelere paralel olarak sportif performansı ilerletme, ölçme ve analiz etmeye yönelik mobil uygulamaların geliştirildiği görülmektedir. Bu araştırma söz konusu uygulamalardan biri olan My Jump 2 mobil uygulamasının geçerlilik ve güvenilirlik analizinin sedanter bireyler ile countermovement sıçrama (CMJ) tekniği kullanılarak gerçekleştirilmek amacı ile yapıldı. Araştırma grubu çalışmaya katılmak için gönüllü 13’ü erkek ve 11’i kadın olmak üzere toplam 24 sedanter bireyden (yaş; 22.25±1.11 yıl, boy uzunluğu; 170.37±8.82 cm, vücut ağırlığı; 63.95±10.69 kg) oluşturuldu. Sıçramalar My Jump 2 mobil uygulaması ve Fusion Sport marka Smart Jump sıçrama matı cihazı ile eş zamanlı olarak kaydedildi. Verilerin normalliği Shapiro-Wilk normallik testi ve çarpıklık-basıklık katsayıları üzerinden yorumlandı. Etki değeri büyüklüğü, Cohen’in d indeksi dikkate alınarak, iki farklı ölçüm yöntemi arasındaki karşılaştırma Paired Sample t test aracılığıyla, geçerlilik analizleri için Pearson korelasyon analizi ve Bland-Altman Grafik analizi yöntemi, güvenilirlik analizlerinde, Tekrarlı Ölçümlerde ANOVA testi, varyasyon katsayısı (CV), tipik hata (TE) ve sınıf içi korelasyon katsayısı (ICC) değerleri kullanıldı. Bland-Altman analizi sonucunda düşük yanlılık (-0.26) ve büyük oranda hesaplanan sınırlı alan içinde dağılan veri seti elde edildi. My Jump 2 ile sıçrama matı arasında yüksek düzeyde korelasyon katsayısı (r=0.99) ve uyum değeri elde edildi (ICC=0.992-0.994). Araştırmanın sonuçları, sedanter bireylerin dikey sıçrama yüksekliğini belirlemede My Jump 2 mobil uygulamasının geçerli ve güvenilir bir yöntem olarak kullanılabileceğini göstermektedir.

Anahtar Kelimeler

• Dikey sıçrama
• Kuvvet
• Mobil uygulama
• My Jump

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